Yes. There is no explicit age of retirement where people are forced to retire. They're quite able to stay on.
I'd like to correct something for the record. My colleague has just given me the age of retirement as it was in 2008-09. I guess that's an average over that year. I underestimated, because it's 58.6 years.
But yes, they can stay beyond that. It's their choice as to when they retire.